Late call up and lack of running aside, Paul Di Resta produced an impressive display for Williams on Saturday afternoon in Hungary as he makes an unexpected debut for the team. With Felipe Massa having to withdraw from the remainder of the Hungarian Grand Prix weekend due to illness, it was left to Williams reserve driver and Sky Sports F1 TV pundit Paul Di Resta to dust off his Formula One overalls and step into the void left by the Brazilian's unexpected absence. Having never driven a 2017 specification Formula One car before, nor having been in active Formula One competition since 2013, Di Resta would turn his first wheel in anger during the opening minutes of qualifying today, performing superbly considering his starting point and eventually splitting Sauber duo Marcus Erickson and Pascal Wehrlein for P19, just two places and seven tenths off team mate Lance Stroll. “I’m not going to lie, I was scared, nervous, anxious,” he revealed. “I've not driven one of these cars for three and a half years, apart from ten laps I did in a 2014 car and then you get thrown into qualifying which is the deepest of the deep I think - it's like being thrown off a cliff and seeing how you can fight for survival.” Despite the unexpected nature of the call to drive this weekend, Di Resta admits acclimatising to Formula One machinery again has been a gradual process, with plenty of potential still to unlock for both car and driver: “Honestly I felt quite comfortable quite quickly,” he said. “When I let go of the pit limiter out there I just built myself up slowly and was improving by half a second a lap, so there's lots of potential there. “Ultimately the team prepared me as best they could in an hour and a half. I was very safe in the high speed [corners], safe in the exits and I didn't really use the rear tyres as you should. “I got into a reasonable rhythm, but I was a bit too early on the brakes, equally the car was rotating a bit too quick for me in certain corners so I wasn't quite taking enough out of it. Even the throttle stroke is so much longer than I'm used to [in DTM] so it was a case of how much can you push the throttle without spinning the rears up with all the power. “It's kind of just getting your bearings again.” Keeping the car away from the final place on the grid, and having now gained valuable experience in a modern Formula One car, Di Resta will be looking to make up ground come race day tomorrow and prove to the Grand Prix world all over again the race craft that won him eight victories and a DTM championship in 2010. “The race is a very different story [to qualifying], the tyres… I don't know where they are, I’ve never driven the car on high fuel, so that will be another shock into Turn 1. Even doing a pit stop, I stopped in the box at the end of the session and they said ‘yes, you stopped on your marks’ but there's going to be about 16 people there tomorrow to try to get your way around. "Of course you want to go forward, want to do what you can but I've got a rate of development and also got to see how my fitness is over the course of 70 laps in the heat... "I've got to get my head around the steering wheel - that's the main thing. Get my head around the formation lap because obviously the team can't speak to me and run me through that. It's a list the length of my two arms... “It's a whole different ball game when you're sitting on the grid and the lights go out because you mind goes blank, so it is just about running through the process, trying to do the fewest mistakes possible as that's what will make the difference between if I enjoy it or not.” Paul Di Resta will start his 59th Grand Prix on Sunday afternoon, the first for Williams and his first Grand Prix since the conclusion of the 2013 season. For more news and discussion regarding the world of Formula One, head over to the Formula One sub forum and leave a comment! Did Di Resta impress you in qualifying this afternoon? Can the Scotsman fight for higher places come the race on Sunday? Did Formula One discard the driver too soon in his career, and does he deserve a driver full time in your opinion? Let us know in the comments section below!