The LHA needed to determine the best and most direct route from New York City to San Francisco. East of the Mississippi River, route selection was eased by the relatively dense road network. To scout a western route, the LHA's "Trail-Blazer" tour set out from Indianapolis in 17 cars and two trucks on July 1, 1913, the same day LHA headquarters were established in Detroit. After 34 days of Iowa mud pits, sand drifts in Nevada and Utah, overheated radiators, flooded roads, cracked axles, and enthusiastic greetings in every town that thought it had a chance of being on the new highway, the tour arrived for a parade down San Francisco's Market Street before thousands of cheering residents.