I don't think it really matters.

I think all the savings of all the cyclists may be so small it may not be relevant.

I think the oil gluttons may be right and not know it, or why.

I think it might be better to use it all up, the quicker the better. Let the earth get on with healing itself. There were a few people around before oil and there will be a few around after oil. Humans are very adaptable, like roaches and coyotes.