[user_7832]

Sure but buses and cars themselves are strong enough and use rubber tyres. Not that I think rubber's a good idea for trains, but still.

[TylerE]

You really don't want to see what a 90mph crash in a bus looks like. It ain't pretty. Those speeds are unreasonable for a bus, but common on commuter rail in many civilized places.

[woodpanel]

> strong enough

no car or bus survives a 150 km/h crash