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Rather than fannying about with a button, why not have a steady amber light on the back of each glove, lit all the time. When you want to indicate just flip your hand over every half a second or so, so that it looks like flashing amber from both the front and the back.

Lights would probably be flashing in the eyes while riding.

Religion is still a much more important part of american society than it is here. All sides of the argument are based, in part, on christian values. They bind the left, and make them stronger, and more able to make progress, just as powerfully as they bind the right. To point to christianity as part of the problem is naive. If Obama gave up on christianity he would be nowhere politically, which would be catastrophic for all of those, both secular and religious, that he is trying to help.

Religion being part of society is different from it being part of government. And I'm not convinced the part it plays in the US is significantly larger than it is here, or Europe in general.

I also fear you're overstating the prominence of religion (specifically Christianity) in US political movements.

I do agree that it's unlikely for a non-believer to be elected, but, without having looked at any data, I would argue that this has has more to do with the thin margins in American elections, and less to do with a majority belief in the necessity of a Christian leader.