Bleating drivers? Try getting through Au Rouge with one knee raised to operate the F-duct whilst fighting the G-forces (lots of hyphens here) and watching your instruments, dialing in various settings for the next braking area, etc, then you can use the "bleating" word. I am with gloomyDAY above. Lotsa horsepower, too much horsepower actually - then get rid of the gadgets (flappy wings have no bearing to road-based vehicle development, for example), light the blue touch paper, sit back and enjoy!
I had to Google this phrase, but I'm still a little confused. Where is this derived from and what does it mean? Must be some kind of British expression.