The 6th Class is the division of cars that travel <110 MPH.

6th Class Cars Top Speed
Jeremy Clarkson's P45 35 MPH
Renault Twizzy  45 MPH
Peel P50 43 MPH
Ford Model T 48 MPH
Renault Twizzy F1 52 MPH
Marauder 70 MPH
Smart Crossblade 81 MPH
Smart City Coupe 90 MPH
Hummer H2 90 MPH
Smart ForFour 101 MPH
Ford F150 105 MPH
Smart ForTwo 110 MPH