A US start-up, which has labored for 10 years to produce a lightweight low carbon car, has come up with one that can actually run entirely on solar. The company is called Aptera, and its 3 wheeler using its Never Charge technology, comes in a low drag-coefficient design, and its first batch has sold out within days of publishing the spec. When it was announced last week we thought we should have covered it, but couldn’t find room, but the idea has taken off so fast that we felt we must come back to it. Basically the Aptera can absorb enough solar in a day to drive 40 to 45 miles, but of course its 100kWh battery can provide 1,000…