You're there Tackitt, as I think that's the site I got this picture from (but as Paul Jaray says you are NOT supposed to post links; everyone has to find their own!).
So this particular car was, as I said, made slightly later than the Allied/Atlas cars by Multiplex Manufacturing Co (who made other cars too, which have already featured in other puzzles on this site).
I have seen this car mentioned elsewhere too and it's generally called a Multiplex Swallow (which sounds nicer than a '186'!) so that's what I am going to call it.
1 point for you anyway.