Drafting behind a garbage truck

is EXTREMELY smelly but VERY effective! This morning on my ride to work I was pedaling fast down 20th street, running a bit behind after stopping at the store to buy lunch materials. While pedaling I came upon a dump truck when he sped up I hopped in right behind him and managed to find that "sweet spot" where (due to the way the air flows) he was actually pulling me and I was doing very little work, yet traveling at about 35 MPH...it was nice, except for the smell.