I normally take the big A roads to work everyday but lately i been taking the little roads. SO instead of doing about 50mph i do like 30mph and the thinking is if i drive slower i will use less fuel so i will save money. Takes me a little longer to get home but i don't really mind as long and im saving money. BUT.... Does it really save you money driving slower? your constantly stopping and starting, for example traffic, lights, crossings, ramps etc. so doest that eat up more fuel that way? Has anyone ever tried this?