here's an interesting review:

"The fact is, you've got a bright yellow '69 Charger at full pelt,
outrunning a bunch of genuine Mopar pursuit cars and being rammed by a
helicopter - filmed on a road, with a camera. What more do you want? In
terms of real action, with no digital effects, speeded-up film or dodgy
miniatures, it's up there with The Gumball Rally. And yes, the scene
with Vic Morrow standing at that crossroads as the helicopter swoops
down to meet him does have a certain resonance.

This film is pretty poor, make no mistake, but as an example of how
cars were crashed in the good old days I reckon it should be in a
museum... "