May I file multiple bankruptcies in a row simply to take advantage of the automatic stay?

No. Such debtors are termed “serial filers”. You may not use the bankruptcy procedure simply to benefit from the automatic stay. Some debtors seek to file several times to keep their creditors off their backs for as long as possible. The Bankruptcy Code has provisions to counter this. If a debtor has had one dismissal within the twelve months preceding the second filing, the automatic stay is only effective for 30 days, without showing cause. If a debtor has had two or more dismissals within the twelve months preceding the filing, there is no automatic stay. In the absence of an automatic stay, creditors may seek to repossess, foreclose, or collect on any debt even in the midst of the bankruptcy case.