I'm pretty sure that the Dart in the far lane is the Balzekas Motor Sales Hemi Dart (Southside of Chicago)
from South Archer Avenue, Chicago. They were Grand-Spaulding Dodge's 'crosstown rival'.
That Dart had a lace paint job, similar to Larry Griffith' car.
Hemi A-Go-Go, Ken Holwick out of Salem, Ohio in the near lane.