 For your car's summer checkup, visit the Ottobah Service Center at 4454 South Amherst Highway in Madison Heights or schedule your appointment at OttobahCars.com. Powerful collection agency on earth. And if you owe back taxes, the news isn't good. The IRS has raised the interest rate it charges on unpaid taxes in recent years. This hits hard if you're behind on your taxes. Most people don't know it, but the IRS adds interest charges to your tax debts daily. If you owe the IRS today, you'll owe even more tomorrow. And