"That is a very dreadful story," said the Padre.
"Very," said I, "and there are some rather odd points about it. Did commercial travellers dash about in motorcars when Popper was a youngster? And why didn't he take that evidence straight to the police?"
The above is almost the last part of "Dilemma", short story written by Dorothy L. Sayers. The word 'dash about' seems to be a kind of twisting part of this short story, but I can't figure out the real meaning of this phrase.
Hoping somebody could help me.