New York (CNN Business) Honda and General Motors are teaming up to create a new generation of fully autonomous vehicles. Honda will invest $2 billion over 12 years into GM's autonomous vehicle subsidiary, Cruise.

GM and Cruise have been building and developing self-driving versions of GM's Chevrolet Bolt EV electric car with plans to deploy a fleet of them for public use next year. With Honda's engineering and financial assistance, Cruise will begin developing a new vehicle that is not based on any existing car, the companies said. It will represent the next step in autonomous driving, one in which controls for human operation are entirely absent.

"This is a purpose-built vehicle that will be the first vehicle produced at scale that is freed from the constraints of vehicle design and having a driver at the wheel," said GM president Donald Amman.

Amman gave no precise timing on when Cruise Automation's self-driving vehicles will be shuttling members of the general public, either in the Bolt EV or the new car. The cars will be deployed only when it has been decided they are safe enough, Amman enough.

The Japanese tech-focused investment bank Softbank recently invested $2.25 billion in Cruise , and Honda took a $750 million equity stake. Together, the Honda and Softbank investments give Cruise a total value of $14.6 billion.

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