[tracerbulletx]

But what if the cars are spherical cows?

[kibwen]

I'm sorry to inform you that those cows are going to have a hard time braking on that frictionless surface.

[PaulDavisThe1st]

Based on a hike in the Carson National Forest 2 days ago, the only reason a cow is on a frictionless surface is that the cow shat all over it.

[BigTTYGothGF]

Cows can't roll that fast.

[zdragnar]

Not with that attitude

[elromulous]

Or on shabbos