So we are stuck with the Bush proposal as the only serious plan on offer.

However, serious plans for the highway did not develop until the 1920s.

Perhaps we should hold some serious back up plan like that in reserve.

They both get jobs, and have serious plans for their wedding.

The Republicans complained it wasn't a serious plan, and in a sense they were right.

"If you have serious plans to run for governor in 2005, right now is not a minute too early to begin."

Have you got any serious plans for the next month or so?

I will support any serious plan that would accomplish these three things.

So neither of them had spent much time or effort thinking about serious defensive plans.

The general verdict seems to be that this is not a serious plan.