If you do it the right way... one hit should suffice.

Hey, my 1976 VW Bus could do 88mph (on a german Autobahn)... but only a rich heir could pay for the gas it guzzled from 65 mph on... or you had to be 1000% fearless.

They are from stainless panels glued to a glass fibre body. Sink it into the fead sea and watch it vanish... or wait 20 years and any ocean will do.

Technically correct...

Verdammt... Steif.... Oder?

But a big small boulder!