alot of people race over a 100mph check out youtube the majority of any race ON A HIGHWAY they would go over a 100mph bcause it has a higher speed limit if you doin if you doin 75 in a 40mph speed limit is just as equivalent as doin a 100 in a 65mph speed limit and im sure alot of u have gotten up to at least 70mph in a race in your slow roll races. It also depends on how fast the next car is too if yall neck an neck with each other u gonna keep steppin on that gas til u feel that u have the win and thats for sure with anybody that race but if u leave him in the dust its more easier to let off the gas more sooner.