I Can Totally Help

The kind of testing done on the up-coming Tesla is almost exactly what I do all the time, here is an excerpt from http://www.teslamotors.com/blog4/?p=60:

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The EPA range was a key benchmark for the Tesla Roadster, but more telling was the range in real world conditions. In recent months we used VP cars to demonstrate a variety of real-world drives that fully-discharge the battery. These trips highlight how the mileage will vary based on driving style and other factors, but also demonstrate that real-world range of >200 miles can be achieved repeatedly. (If you live in Northern California, you may be familiar with some of these locations.)

• 267 miles of conservative urban driving in the suburbs around San Carlos (a best-case scenario)
• 230 miles from North Lake Tahoe to San Carlos with two occupants plus luggage
• 227 miles of highway cruising on the I-5 freeway, south of Stockton
• 222 miles including sporty driving from San Carlos to Santa Cruz via the hilly Skyline Blvd, and highway cruising from Santa Cruz to San Carlos via Hwy 1, San Francisco, and US 101
• 213, 209 and 203 miles of highway cruising with A/C using I-280, Hwy 85 and US 101
• 186 miles of aggressive driving on I-280 and the round trip from Woodside to San Gregorio Beach via Hwy 84
• 165 miles of impatient commuting, aggressive stops and starts, high speeds, and air conditioning on from Saratoga Gap to San Carlos via Hwy 9, Hwy 85 and I-280 (a worst-case scenario)