[fbergen]

I don't believe market cap to sales is a good ratio to look at when the margins are so different.

A forward P/E of 25 for a company growing 50% YoY is not unheard of.

Since you picked VW as reference, i had to look them up they have forward P/E 4.84 > trailing P/E 4.66 meaning they are shrinking (?)

[tephra]

While a 25 PE is not unheard of at all, they have been up on much higher levels (190+ IIRC) before this price fall.