Drs. Siva Sriharan and Srinivas Chakravarthi may never get rich staying in this small auto-producing city little more than a stone's throw from downtown Detroit, but they can eat all the hamburgers, ribs and potato skins they want for the rest of their lives at Casey's Bar and Grill. For the next year, they can also get their hair cut free at the Touch of Class beauty salon, and lease a Pontiac Grand Am without charge from a dealer in nearby Essex. Patients have pledged free house repairs and landscaping for their properties, and nurses have teased them with offers...