As you can see gridmap is a bit different and the lighting has changed a bit, I have some pictures down here:
looking through old devblog's, i'd say its 0.3.0 (can't pinpoint exact version, according to devblogs there definitely was 0.3.02, not sure if there were undocumented versions released. could have also been a wip version of 0.3.1, as that released a few months after the greenlight trailer if you were wondering, the 0.3 version used should be on the internet archive. as for Steam, the oldest version in the beta tab is 0.4.0.6, for computers that don't support DX11 (i think there are bigger issues to consider here)
Thanks, but I think that it was later released somewhere in January-February of 2015 (proof from one of whybeares videos on gridmap) although the lighting has changed a bit (possibly an experimental version?) or its just a Dev build
I think it's 0.3.0.5 with perhaps with some changes as the devs were midway through working on the Pre-Race update