* Musk drops Tesla take-private deal; German-listed shares fall (Updates prices, adds quotes, details): LONDON (Reuters) - European shares climbed on Monday after a market-friendly speech by U.S. Fed Chairman Jerome Powell and signs of progress on a U.S.-Mexico NAFTA trade deal, which drove car stocks higher. The pan-European STOXX 600 rose 0.3 percent by 0725 GMT, with Germany's DAX .GDAXI up 0.4 percent, following new record highs from the U.S. S&P; 500 and Nasdaq after Powell kept to the Fed's forecast for "gradual" interest rate hikes.