Tesla (TSLA 0.15%) shares are retreating after a post-election surge. As of this writing, they trade 19% off their all-time high from mid-December. And so far in 2025, they're down about 5%.The world's top electric vehicle (EV) stock has still worked out incredibly well for shareholders; it soared 1,170% during the past five years (as of Jan. 8). But with its current market cap exceeding $1.2 trillion, is Tesla a company you should be buying right now?Facing challengesTesla's rapid ascent in the past decade ...