electrical - Existing NEMA 10-30R for dryer wired with hot hot

I'd like to change the obsolete unsafe NEMA 10-30R to NEMA 14-30R so that I can safely have a smart splitter switch for dryer and EV charging. Behind the NEMA 10-30R I see 3 wires: black, white (ta

thinkstar 3 Prong Srdt Dryer Cord 10 Feet, 30 Amp Appliance Power Cord (Nema 10-30P

3-Prong Electric Dryer AC Power Cord 30A (NEMA 10-30P to 3-Wire) 6Ft UL Listed

Conntek 30-Amp NEMA 10-30P Dryer Plug to 50-Amp Electric Vehicle Adapter Cord for Tesla

Conntek EV1030T 30-Amp NEMA 10-30P Dryer Plug to 50-Amp

Safe & Quick Dryer Power Solutions – AC Connectors

Flush Mounting Power Outlets 10-30R 30A 2103S

Trying to swap 4 prong dryer outlet for a 3 prong. I have a black, white, and bare ground wires. There should also be a red right? More info in post : r/AskElectricians

NEMA 10-30 to 14-30 adaptor

DEWENWILS 1.5ft 3 Prong to 4 Prong Dryer Plug Adapter, NEMA 14-30R