I find such numbers very hard to believe - http://www.fuelly.com/car/honda/insight/2010

Not and option for sailing racing boats - International Sailing Federation Racing Rules of Sailing prohibit this kind of solution: "53 SKIN FRICTION A boat shall not eject or release a substance, such as a polymer, or have specially textured surfaces that could improve the character of the flow of water inside the boundary layer."

Also the fact that Finnish troops had submachine guns vs Russian rifles might have been a factor.