Of Churches and Garages

I've heard folks who don't attend worship say that going to church doesn't make you a Christian any more than standing in your garage makes you a car. I've been trying to formulate a reply. My thought is that just as the garage is the best place to keep your car to protect it from hail, etc.; so church is the best place to protect your faith from the storms of life. Like the car, you have to take your faith out to get the use out of it, it was not intended to be kept inside, but it is still wise to have it in the garage whenever you can. If you extend the garage metaphor to a "working garage" with oil changes, etc, it makes even more sense to consider regular church attendance essential. This is a metaphor in process, let me know what you think.