Will I still get my $7500 Tax Credit if I sell my car within the tax year I bought it?
Yes. There is nothing in IRC 30D that requires a minimum period of ownership: https://www.irs.gov/businesses/plug-in-electric-vehicle-credit-irc-30-an... It does say the vehicles must be acquired for use or lease and not for resale, so they might question if you sold it the day after you took delivery.
Thank you Stevenmaifert