Tesla's electric-car business is now so good that it might be able to forget about self-driving cars. That could be a significant bonus for the company. (TSLA, GM, GOOGL)

· Tesla's share price has rocketed to all-time highs in recent months.
· The epic run-up hasn't required anything new to happen on Tesla's self-driving front.
· Meanwhile, Alphabet's Waymo and GM-affiliated Cruise have been making significant progress with their business models.
· Tesla, fortunately, hasn't needed...