Tesla ( TSLA 0.04%) is one of the world's leading electric vehicle (EV) manufacturers, but many analysts believe the company's true value lies in its futuristic product platforms like the autonomous robotaxi and Optimus humanoid robot. In fact, CEO Elon Musk believes those products will make Tesla the largest company in the world one day.

Tesla Inc. is in a sales slump, with deliveries of its electric vehicles on track to decline for the second full year in a row.

Their escalating feud threatens critical parts of the billionaire’s business empire — and leaves Republican legislators caught in a tussle between the two.