I haven't read anything about it but I am really curious about how this works technically.
With train or tram systems there are a known number, or at least a known maximum number of vehicles in any one area of track at one time, with a highway if there is a lot of traffic then it could be a much bigger number of vehicles at any one time. Does a high number of them drawing power at the same time present any possible problems?
When it comes to consuming natural resources, it's definitely much cleaner than making a lot of trucks with huge amounts of batteries in them.