Among the many differences were:
- Tucker began by using a Franklin air-cooled aircraft engine, then retrofitted it to be liquid-cooled, changing the approach several times before completing the production run;
-Tucker also tried to produce automatic transmissions with three (IIRC) used during the short production run.
Tucker was innovative, and some of the innovations were later adopted by others, but the Tucker cars were never produced in commercial quantities, nor were they ever fully functional.
For everything Tucker including multiple cars, history, several engine versions etc. a visit to Hershey, PA is in order, to the AACA Auto Museum:
http://www.aacamuseum.org/tucker-automobiles-cammack-collection/
I spent three hours there a couple of months ago taking advantage of their Tesla HPWC that are just outside the front door. At the time the Harrisburg Supercharger was not yet open. I highly recommend the museum for the Tucker collection, an interesting bus collection and lots of other curiosities. There is no empahsis on EV's, sadly, but it still is well worth the stop.
There is essentially nothing analogous between Tucker and Tesla, in my opinion. Tucker had commonalities with Bricklin and DeLorean far more than with Tesla.