Warren Buffett, the closely watched investor and mega-billionaire, expects that 20 years from now, all cars will run on electricity. At least, that's what he told Rice University business students at his Omaha headquarters this month when asked for his thoughts on peak oil and replacements for "carbon fuels," the Houston Chronicle reports. Such a rapid transition to electric vehicles could work out well for BYD, the China-based developer of electric vehicles and lithium-ion batteries in which Buffett's Berkshire Hathaway investment firm holds a 10 percent stake. If nothing else, aggressive statements from Buffett, one of the world's highest-profile investors, could help build momentum for the EV market and BYD's growth.