I like the 3D look, though I can't always get it right. Front shot of the Testarossa was with my 6D and 35mm f2 IS @ f2.8. Boss was shot with my Fuji X100F, which has an APS-C sensor and 23mm fixed lens, so a 35mm equivalent. Also @ f2.8.
I'm gonna take my 6D and 135L to Culver's next week (probably). It might be too crowded to use it, but I haven't shot any cars with it yet. I'm curious to see what sort of separation I can get. At f2, I should be able to make all the distracting stuff in the background disappear.