The Electric motors are direct drive 0-90 mph 0-9000 rpm, 100%torque at zero rpm with no flywheel losses. BUT THE OTHER SIDE OF THE STORY:
(Heat-efficiency loss)miles/kw - 0/0 then 80% by 2000rpm(20mph) peak eff 98% 2500rpm (25mph)-
Drops slowly 3300 then steeper to 4500 rpm (45mph) then straight line plummets to 10% at 9000 rpm.
THE ANSWER IS YOU ONLY SPEND A SHORT TIME 0-20 unless climbing a 20% hill at 10 mph for 20 min- bad for very hot motor. Do it at 25 mph.- less heat loss.
Must must need best rpm 2000-4500 so direct drive 0-45 (no gear loss)then :
single planetary 50% overdrive 45-90- motor rpm efficient-2250 to 4500 rpm- they don't want you to know this.
And high efficiency air to air heat pump for cool and heat that reduces mileage less than 30 miles total on a charge.
Battery run charge at- 10%-80% May out live you. Especially with lower charge rates.
Last -need stream line low drag- air under car worse than air over the car
WOULD LIKE TO HAVE A CONSTANT WATTAGE SETTING
THAT WOULD LET SPEED VARY WITH CONSTANT KW.