Leaving aside remarks about the developer's horrible choice in names (Really? Eutechnyx?), Auto Club Revolution is looking to be one fine looking beast of racing goodness. Granted the most recent Need for Speed is the first racing title I've played in years, I know what I like when I see it! Although having a little combat here and there would certainly pique my interest a bit more, the game does seem to have some car modification/customization options, as explained by Eutechnyx's Jason Collins:
“The workshop in Closed Beta is just a flavour of the style and presentation of how players will modify their cars. When the focus and scope of testing changes more features will be added giving players even more customisation, modification and upgrade options for their cars.”
You can sign up for the closed beta here. Of course, if you're just lazy, there will also be an open beta following sometime later.
Thanks, RPS!