The Tesla website uses Drupal

Tesla Drupal website home page screenshot

Tesla, Elon Musk's electric car and energy storage company is built using Drupal. The home page features an attractive and engaging, fully responsive HTML5 video, with two simple call to action buttons overlaid on top of the video. On smaller screens the video is replaced by static images of the cars. I also noticed that the site uses panels, and the Shopify platform for it's e-commerce shop.

Tesla responsive Drupal website home page screenshot when viewed on mobile