Ugh...for real? A shuttle is light and "small" with say for arguement a 7.3diesel...now add about 5 to 18 thousand more pounds to it...so yeah shuttle buses are faster than school buses unless you put 3000hp under the bus...then all bets are off
Sorry for sounding like an arse...I'm good at that ask my wife
But the 2 vehicles aren't in the same ball park when it comes to hauling itself around