Nissan Leaf electric car is easily hackable via a web browser

[HEXUS]

Just knowing vehicle VIN lets attackers control climate system, see journey data.

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[TheAnimus]

Authorisation is hard to do properly. But at least try to do it at all.....

[whatif]

Could be a bit annoying if you don't get along with someone like the neighbour, every morning the air-con set to high or low. Also a neat prank on a friend who is not aware - sort of similar to turning up to their house with a extra TV remote and create viewing confusion (done it before).
Lucky these were not the more advanced models with all the new self-driving facilities that are being worked into them nowadays. Like the one they are trialing at a parking station, you leave the electric car at the entrance, and the system parks it, moves it to a available charging station when available, re-park it, then brings it out to the exit after you alert it to your approach. Hope they have these well secured.