Alternators like this one will probably disappear from the front of engines, replaced by a starter generator built into the transmission. Photo: Jim Park Within a decade’s time we will probably have ...

With fuel economy regulations tightening and connectivity and autonomous-driving capability proliferating, the old-fashioned 12-volt automobile electrical system has reached the end of the road.

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Year by year, lithium-ion battery technology improves, and EV range and performance leap forward. We're ...