Drawing on BART

Tried to draw my bike saddle on BART on my way home from work. Not too happy with it. I used a mechanical pencil because I thought it would be more forgiving on a moving vehicle. I had some trouble with the perspective but I'll just pretend I did it on purpose, Cezanne-style... you can see the top and underneath at the same time. Erg...
The ride was not long enough to complete it. When I got home I doodled a snail. Eyes on stalks!