Its any chance of add any fwd touring car like WTCR or any tcr based WTCC (RRRE licensed) TC2000 BTCC Turismo Nacional STCC
There is a chance, although no official plans at the moment. For now, the options are to race JCW Mini or to race with vehicle mods.
Unfortunately, it's not permitted to link directly to mods in this forum, but you can ask the same question here: Automobilista 2 - Modding …and there you'll at least be able to discuss mods, although linking directly to mods is still not permitted there.