Tesla Motors (TSLA) shares have turned decisively downward this week. Cracks in the previous uptrend first started to appear back in February then the shares broke below their 50-day moving average, then in an April bounce, they peaked at a lower high. This week, the shares have snapped an uptrend line and then confirmed the start of a new downtrend by falling below the $600 round number and taking out several winter weekly closes to complete a bearish Descending Triangle pattern.