SolarCity Corp (NASDAQ: SCTY) June weekly call option implied volatility is at 90, July is at 77, August is at 88; compared to its 52-week range of 34 to 176 into Tesla (NASDAQ: TSLA) offering to acquire for $26.50-28.50 per share in an all-stock deal. Both Tesla and SolarCity are headed by Elon Musk.