I've searched here for any reviews/reports but can't find them, but let me know if this is a repost. Does anyone here use a 15 foot or longer NEMA 14-50 extension cable with a Roadster? I visited a fellow owner in Princeton who had one but at that time I didn't really pay it much attention as I was charging from his HPC. e.g. this one for $75 Amazon.com: RV Extension cord 50 AMP 15 RV Power cord: Everything Else or this one for $100 Amazon.com: Voltec 16-00510 6/3-8/1 STW 50 Amp RV Extension Cord with Ezeegrip Handle, 15-Foot, Blue with Yellow Stripe: Patio, Lawn Garden (edit: or this one for $60; this is probably the one I'll get if I get one at all) Amazon.com: Camco 55194 50 Amp 15 RV Power Grip Extension Cord: Automotive We may have three Roadsters very close together in our driveway prior to the Sept 18th NJ/NJ/CT rally so, rather than play "musical cars" with $400K worth of hardware, I am thinking of buying a 15 ft extension; added to the slack on the UMC this will be enough. Any advice/warnings would be appreciated. Thanks in advance.