Maybe no one?
ESPN has a poll and includes VW, Hyundai, Honda, and BMW.
BMW? They have a long and broad history of racing internationally, including ALMS (GT) and Grand-Am (DP and GT classes). But everyone expects BMW to turn right, and there just isn’t much opportunity to do that in NASCAR. Given BMWs strong reputation for handling, I doubt that they want to participate in NASCAR.
Honda? Maybe. They also have a strong history in racing, and their main Asian competitor is one of the 3 remaining factory sponsors.
Hyundai? I’m not sure they’re ready. They’ve done Pike’s Peak and drifting, but this would be a big step forward.
VW? I think that VW is most likely. They claim that they want to be the largest manufacturer in the world, and that would have to include significantly larger sales in the USA. One way to enhance sales for a brand that fancies itself as the sporty alternative, is to race in premier venues, and NASCAR is certainly that. Watch for a CC in the next year or two.
I also think that Mazda is a possibility if they can stand the funding necessary to field a car or two.
What do you think?