In the picture the 'shareprice' is being used to show whether or not Google nav is a threat to tomtom. I think you could better look at revenue or profit. If you look at the shareprice, it indeed plummeted. But if you look at revenue of tomtom, it decreased slightly, with profit even increasing due to margins of 'services' like HD traffic. Financial markets (stockmarkets) tend to act more on emotions rather than facts. With a big name like Google appearing as a competitor, some people think you're out of business immediately. TomTom's figures prove that this is not the case. So the decrease of shareprice to me looks more like an exaggeration, to say the least. Especially since TomTom signed some deals in the carmanufacturing industry to create in-dash systems. Which is a totally different playground. Also, Googles mapquality is only decent enough in the US. When you look outside of the US, it's a different picture. Only Navteq (owned by Nokia) and TeleAtlas (owned by TomTom) have good maps on a global scale.