What's the alternative? Should he choose to risk dying in a crash for the nebulous greater good of lowering the average size of vehicles on the road? This problem will not be solved by individual drivers acting against their own self-interest. It needs to be solved at a societal level, probably with regulations on maximum vehicle size (which already exist, but are being worked around by mfrs)

Signed, A Miata driver. If I ever get in a wreck, I'm guaranteed to lose, but at least I'll go out in style.