Here is an early film with speedster, touring car and roadster pick up footage.
Thanks so much for the link. I believe the Sheriff's mount appears to be a Mercury bodied speedster. If not, one that looks very similar to me.
Hap l9l5 cut off
The later Mercury bodies that had doors were rear hinged ( suicide style). The overall body is similar but I can see enough lines around the cowl ,cockpit, , rear end and lower edge that I don't think it's Merc. Wishing it was but I don't think so.
Nice bunch of speedsters. The bad guy is driving a Modified Mercer raceabout of about 1913 vintage!
The tail of the sheriffs car is very pointed much like a Bub body.