I do remote racing but I'm not sure that the driver gains XP, just the Bspec level in general. I could be wrong but I think this is the case.
Each race counts towards his career, so when he wins in Remote the career will move that tiny bit
I have racers with 1700+ races and little progress on career:
That is because remote races do not give career progress! Get it from the master.
you are wrong...
driver lvls too but carreerbar wont