The F1 guys have some advantages over the NASCAR guys, NASCAR a top team is banging on 12 seconds for a 4 tire and fill the tank stop.
Gravity fuel feed for NASCAR. ONLY one side of the car up at a time for NASCAR. Jacks are NOT part of the car in NASCAR. F-1 knockin on 3-4 second pit stops. F-1 has jacking mechanism as part of the car. There is only one nut holding each wheel on F-1. The F-1s use a pressurized fuel system similar to aircraft. On F-1 all four wheels are changed at the same time. Open wheel F-1 versus Full body-NASCAR. Course these days I'd much rather watch alcohol modifieds at the local dirt track. RIDE SAFE.
No, there is no jacking mechanism in a F1 car, there is a guy in front and the rear of the car with a jack. And they don't get extra fuel, fuelling a F1 car during the race was banned in 2010.
Team Williams broke the pitstop record this year in Bakou, four tyres changed in 1.92 seconds.
Here is a nice slow motion of the same pitstop:
http://youtu.be/edXVQcBSD6o