If you take a gamble where you drive to them but the unit is broken, you risk being screwed and stuck on the side of the road.
If all dealerships or gas stations purchased one of these units and then charged $20 for emergency use - (especially in a busy area) they could reasonable make $400 per month (20 uses per month) and pay off the $6800 purchase price in about 17 months.
THIS MAKES A LOT OF SENSE
Lock this thing up in a cage when it is not in use SO IT DOES NOT GET STOLEN.
Your employees do the charging, but hold the keys to the car - for 24 to 30 minutes.
This is an excellent idea and a great business opportunity for someone who buys this unit (expensive) and offsets the purchase price by partnering with a towing company OR when the SparkCharge app is released.
There are plenty of times when a desperate EV owner can't make it in time to a charging station and ends up on the side of the road with a drained battery.