I totally agree. (on the $4 per gal gas kicking off the mortgage crisis) When you are filling two, or more, cars per week at $4 per gal. it really adds up. Suddenly there is no wiggle room in the budget. Then somebody loses a job and it’s crisis time.
When your Interest-only Option ARM transitions from the interest-only phase to the fully-amortizing phase and your payment goes up $1000 per month, it doesn't matter if gasoline is free; you're in a world of hurt.