The hubless delivery service has now secured approximately $90m altogether, with GLP Capital Partners co-leading its series B round.

Those with long memories of robots from television series growing up developed a strong and willing suspension of disbelief at how these machines could struggle with steps or picking up items but still be a threat to the planet.

The autonomous driving system developer is now valued at over $3bn, having secured $462m including $400m from strategic partner Toyota.