Nissan is launching a subscription service that lets you switch to a different car every day. Here's how it works. (NSANY)

· Nissan is launching a subscription service, allowing drivers to switch to a different car every day. 
· The program, called "Nissan Switch," will cost $699 or $899 a month depending on which tier you choose, and will be launching in Houston as a test-run.
· The "Select" tier will offer access to models like the Altima,...