what is the difference between f1 & indy cars?
While the F1 and Indy cars feature open wheels and an open cockpit, NASCAR drivers are enclosed in a sedan-styled vehicle. ... The increased weight is carried by a 5.86-liter V-8 engine, whereas the lighter F1 and Indy cars are fueled by a 1.6-liter V-6 and 2.2-liter V-6, respectively.