From GreenCarReports.com:
The Road Chief (like the old designed Airstream), is 8 meters long, weighs 1050 kg, and was designed with aerodynamics in mind. With that load hitched to it, the Model X was capable of a reported 70 percent of its EPA-rated range (EPA range: 257 miles=413 km, 70%EPA range: 289 km with the 1050 kg trailer), when driven at a consistent 80-90 km/h. It also accelerated from 0 to 100 km/h in 5.5 seconds while pulling the trailer.
