Is there a photo to vector filter for Inkscape?

Take for instance the truck in this image:

http://www.crowdspring.com/var/crowdspr ... kins_3.jpg

There's no way I can find the time to possibly draw that entire truck. I was wondering if there's a trick in Gimp or Inkscape to import a photo and sort of halfway convert it to a vector-drawn image, even if I have to do more adjustments after that?

1. import: open a new drawing, use menu 'File > Import…', select the JPEG image you want to trace and insert it into your drawing.
2. trace: select the imported bitmap, use menu 'Path > Trace Bitmap…', adjust the options to your needs and create a vectorized version of your original raster image.

Additional info: tutorial and manual pages:
http://inkscape.org/doc/tracing/tutorial-tracing.html
http://tavmjong.free.fr/INKSCAPE/MANUAL/html/Trace.html