Acceleration

The difference between a sports car and a school bus going from a complete stop to 30mph is huge (like the bus) because the amount of time it takes for the sports car to accelerate to 30mph is a lot less than the bus for many reasons. The bus was meant to hold large amounts of people, but not to race some sports car, which are made to be faster. The acceleration of the sports car will also be faster because they are better with wind resistance then a huge block with 30 people inside of it...

By the way,