ecological benefit

Tony Hsieh (pronounced “Shay”), whose net worth is north of $800 million, is working on a plan to convert some of the 9000 taxis in Las Vegas to electric vehicles (Teslas) hailed by and paid for with smart phones. I hesitate to criticize someone who’s been so monstrously successful, but I’m unclear on the benefit. Currently, is it hard hailing a taxi? Is it