Dave Plowman (News) ("Dave Plowman (News)" ) gurgled
happily, sounding much like they were saying:

Look at 'M' series BMWs for normally aspirated production cars with 100
bhp/litre.

Or Honda.

The Civic VTi was doing 160bhp from 1.6 litres fifteen years ago.
The S2000 has been doing 240bhp from 2.0 litres for nearly a decade.
The current Civic Type-R is still "only" doing 198bhp from 2.0 litres.

Bikes yes, but cars?

Bikes are heading towards 200bhp/litre, naturally aspirated.