Zoox is in talks with SoftBank for an investment as part of a $1bn+ round that could value the autonomous car technology developer at up to $4bn.

Internet and telecommunications group SoftBank has entered talks to invest in US-based autonomous driving technology developer Zoox at a valuation of between $3bn and $4bn, Axios reported today citing multiple sources.

Zoox is still in stealth mode but is working on a vehicle that will incorporate its proprietary self-driving software as well as additional technology it reportedly believes will allow it to compete against rivals such as Tesla Motors.

The talks are at a preliminary stage but SoftBank’s prospective investment…