With testing of the attraction ongoing at a “Vekoma testing” facility, it would appear we have a first look at the ride vehicles for Galaxy: Cosmic Rewind – see in the photos below.
The photos were posted on the ThemePark.nl forum by user, Mr. Rollercoaster. We have no affiliation with this user.
Going by the concept art released back in November, 2018, it would be safe to say the vehicles roughly match. Find out more about Guardians of the Galaxy: Cosmic Rewind here.