Whippets are slippery buggers. Mine was a proper escape artist, even harnessed. He loathed his crate in our van, fine at home though.
I have quick Lurchers and have done fun lure racing with them. He is an escapologist but will only go as far as the nearest squirrel, the other is a Mummy’s boy and glued to my side, even with squirrels.
For the record, I can’t run at 40mph either.