However, trader Tim Seymour warned that he is "skeptical" of Tesla's ability to meet its expectations.
Greenlight Capital's Einhorn, meanwhile, made the case for General Motors and against Caterpillar at the Sohn Investment Conference in New York.
He touted GM's valuation and the company's ability to cut costs and restructure. Seymour agreed the stock is not a bad bet "even if you think its best days are behind it."
Einhorn also contended that Caterpillar is hurt by mining volatility and slowing commodities consumption in China. Trader Brian Kelly said Caterpillar makes sense as a trade on the short side.
He noted that Freeport-McMoRan could also face difficulties if Einhorn's thesis proves correct.
Karen is long BAC, C, DRII, DRII calls, FB, FL, GOOG, GOOGL, JPM, LYV, KORS, M, SEDG, SPY puts, URI. Her firm is long ANTM, AAPL, BAC, C, C calls, DRII, DRII calls, FB, GOOG, GOOGL, JPM, JPM calls, KORS, LYV, M, MOH, NRF, PLCE, SPY puts, URI, her firm is short IWM, MDY. Karen Finerman is on the board of GrafTech International.
Brian Kelly is long BBRY, Bitcoin, GLD, SLV, US Dollar; he is short Australian Dollar, BLK, CS, DB, Euro, EWA, EWH, FRC, Hong Kong Dollar, UBS, Yuan, 5-Year Note Futures
Long AAPL, BAC, BMY, CSCO, DIS, DISCA, GE, KMI, KMI.A, KO, LUX, MRK, PEP, PFE, SAVE, VIAB, ZIOP Long Calls: AAL, AGN, AKS, AMJ, COP, EGO, EWZ, HAIN, HBAN, JD, KATE, KBH, KMI, LLY, MSFT, MT, NLNK, SBUX, SLV, SPG, TCK, UAL, YHOO Long Puts: FCX, NOV, PBR, VLO
Tim Seymour is long AAPL, AVP, BAC, BBRY, CLF, DO, EDC, EWZ, F, FCX, FXI, GM, GOOGL, GRMN, GE, GLNCY, INTC, LQD, MCD, MPEL, NKE, RACE, RAI, RL, SINA, T, TWTR, UA, VALE, VZ, XOM. Tim's firm is long BABA, BIDU, CLF, EWZ, F, HD, KO, MCD, MPEL, NKE, PEP, PF, SAVE, SBUX, SINA, VALE, VIAB, WMT, WEN, YHOO, short HYG, IWM, WYNN