L1 charging is not horrible; if the battery is flat, I get a complete charge (volt, 50 mi) in 10 hours. If I had L1 destination chargers 80% of the time, I'd be okay. I believe we could use combo L1/L2 charging to reduce the grid load and service more cars if one could spread the energy among the sockets depending on usage. small number of cars, L2 speeds, large number of cars, L1 speeds.