F1 Racing is like driving jets on the ground. NASCAR is like racing monster cars in sheet metal around an oval. Indy Car are powerful beasts themselves. Each type of racing has their own unique demands and needs. Here is a video that shows the difference between pit stops in F1 Racing, NASCAR, Indy Car, Formula E and WEC.
F1 Racing is the fastest as they have the most crew members (14+) and don't allow refuelling mid-race. Indy Car and NASCAR use 6 crew members and allow refuels. Formula E only has 2 crew members but the driver changes cars completely. And the WEC uses 2 crew members to change the tires, 2 crew members to change drivers and a new driver comes in during the pit stop.