I bet if you combined speed bumps with a decent gas tax (with tax discounts for business use) and eliminated the "light truck" tax loophole for SUVs [1], you'd probably wipe out the huge SUV syndrome.

Of course, SUVs are highly profitable for the auto and petroleum industries, heavily represented in lobbyist circles, so it's pretty much a no-go.

[1] https://turbotax.intuit.com/tax-tools/tax-tips/Small-Busines...