does anyone know anything about these 250cc hi-bird enduro bikes? thinking about buying one just to go to and from work( 15 miles each way) , and occasionally going on the local trails...nothing major i.e. jumps and such..they say they can get up to 110 miles a gallon on there website? im just wondering if they hold up under normal usage? i'll be happy even if it only lasts 3 years..