I tested my 2016 Rad out this morning on level ground using the 1 Mississippi method:
0-20 mph about 18 seconds throttle only
0-20 mph about 10 seconds with combo of throttle and hard pedaling (started in 4th and shifted to 7th)
62 lbs Radrover
12-15 lbs for accessories (rack, rack bag, flat kit, rain gear, water, extra lights)
270 lbs for me
12-15 lbs for commuter backpack (lunch, work cloths, coffee, etc...)
360-370 lbs for the rear hub motor to push