"i know nascar is different but why do they have so big viewing figures, bigger than f1 i believe? surely f1 is global whereas nascar is mainly us."
F1 is second only to the world cup and the olympics in terms of viewing figures, about 330million people watch each race, now with china holding a race, with their 1 billion population it is sure to rise even further, nascar is very popular in the US, but cant compete with F1, in terms of which is faster, F1 is, better accelertion. better braking, more responsive, out right speed, its close, shumi was doing 231mph down the back straight of montreal (tailwind), with a reasonble amount of rear wing, if he dropped it, Monza style, with close to 900bhp pushing him along, 240 could have been possible, what are carts and irl top speed?