Gatriel

Can anyone explain to me what a "clunk of junk" actually is?  
I am familiar with the term "hunk of junk", but a "clunk of junk" is a new term to add to my lexicon. 

Thanks for the reply.  Yeah, the gas mileage is horrible, but my plan is to convert it to use natural gas, which further reduces fuel economy about 20% -- but it costs about $1.20 a gallon here or about 70% cheaper than normal gas, so I get myself the biggest tank possible, and LNG is so cheap -- I couldn't care less about mpg.