Austin was among the hottest destinations in the country for where people were moving last year, according to the latest annual ranking from U-Haul International Inc. U-Haul collects migration data from more than 2.5 million one-way U-Haul truck, trailer and moving container rentals for the year. It ranks the top “growth states” and “growth cities” by net gain, which contrasts the number of one-way U-Haul trucks entering a city or market versus those leaving.