The Natural Philosopher (The Natural Philosopher ) gurgled happily,
sounding much like they were saying:

60 bhp per litre. The same as a '64 Mini Cooper S. Just what you'd
expect from a modern truck engine. Proper sports car engines manage
over 100 bhp per litre.

Well racing car engines possibly. Not many road tuned cars will do it.

It's not that unusual.

120bhp per litre is available from your friendly local dealer, without
forced induction.