The "market test" was a shack across the street from a 100% free Tesla Supercharger station. To use said shack, you had to be one of a select group invited, make an appointment days in advance, pay a fee, and risk that you're trading your $20K battery for a worse one out of someone else's car. They invited a couple owners and journalists to do a few swaps for the magazines, collected their extra ZEV credits, and then disconnected the phone and let the one person staffing the place go back to his normal job. If that looks like an honest market test to you, then I don't know what else to say.