On a Freeway/Highway/Blvd/etc. The Heavier/Larger Vehicle IS going to have,The Advantage,As far as Vehicle to Vehicle crash is concerned,Regardless of passenger position/disposition.Short of a T-bone into the drivers side door,that is!Inertia play's a Big role,Regardless of said highly engineered,Crash tested Volvos/Saabs/Mercedes/etc.