Apple's CarPlay is only available on a few production vehicles (Photo: Apple)

The rumors surrounding Apple's alleged interest in building an electric vehicle took another twist this week, when German magazine auto, motor und sport reported that BMW and the California-based consumer electronics group are negotiating to possibly make BMW's next i3 electric city vehicle an Apple car. BMW immediately denied the report to the Reuters news agency.

The auto, motor und sport story said Apple was impressed with BMW's commitment to the i-series cars, which were built on an entire new architecture. The magazine said the two companies were discussing whether the i3 could be further developed into an Apple car that could be bought at Apple stores and serviced by BMW. But the publication also quoted a senior BMW manager as saying that it is conceivable that BMW and Apple would jointly develop a whole new vehicle.

A BMW spokesman told Reuters that the carmaker's discussions with Apple didn't involve developing or building a car.

Rumors about Apple's interest in building a car surfaced in February amid reports that the computer, smartphone and software maker had been hiring hundreds of automotive experts to work on an electric vehicle. Apple declined to comment on the reports and skeptics said the automotive engineers could also be employed to improve the company's infotainment interface, CarPlay.

Several carmakers have committed to rolling out CarPlay, but, sofar, it is only available on a few production models.