One that may have promised far more than it can deliver is Aurora Innovation (Nasdaq: AUR). Flaws in Aurora Innovation's planHowever, analysts are sceptical, with Sahm Adrangi of Kerrisdale Capital arguing that the group’s product suffers from two major flaws. Firstly, its bespoke system (like many other companies involved in self-driving) relies on Aurora spending huge amounts of time and money mapping each of the 50,000 miles in the US Interstate Highway System. As a result, I suggest you short Aurora at the current price of $5.73 at £2.25 per $0.01. Enjoy exclusive early access to news, opinion and analysis from our team of financial experts with a MoneyWeek subscription.