Google's self-driving cars won't work in heavy rain or snow

Many motorists dream of the day they can sit back and relax while their car drives itself. And while Google and other companies are working hard to make autonomous vehicles a reality, it could take years to create a car that can negotiate complex situations on the road – including wet weather conditions. Google's self-driving cars can't currently cope in heavy rain or snow – or find their way around 99 per cent of the US, an insider has admitted. A Google Insider has admitted that the firm's cars (pictured) are incredibly reliant on maps, can't cope with wet weather conditions and are unable to'see' potholes. According to MIT Technology Review, the current prototype cars are very reliant on maps to navigate and can't react like a human driver, dodging potholes and other hazards.