By Luc Olinga Detroit auto giant GM had invested in the cash-strapped EV startup Lordstown. Things don’t seem to be looking up for cash-strapped electric vehicle startup Lordstown Motors (RIDE) – Get Lordstown Motors Corp. Class A Report They even seem to be getting worse: GM (GM) – Get General Motors Company Report, whose presence as a shareholder could ease investors’ concerns, has just withdrawn. The owner of the Chevrolet and Cadillac brands has sold its remaining stake in Lordstown Motors, a spokesman, Jim Cain, confirmed to TheStreet. “We did sell our 7.5-million-share stake during the f…