GM reportedly said it has invested $36m in start-ups and more investment is coming soon.

The corporate venturing arm of US automotive company General Motors and Japanese financial services group Mitsui are among the syndicate investing $30m in Proterra, an electric bus company. 

GM Ventures and Mitsui were joined by venture capital firms Kleiner Perkins Caufield & Byers, Vision Ridge Partners and 88 Green Ventures in the round. Proterra previously raised $20m from MK Energy and Infrastructure last year, meaning it has raised at least $50m.

GM told news provider Reuters it had invested about…