And we're done!
1 - 1904 Ottokar runabout - Paul Jaray
2 - 1914 Keller Kar cyclecar - Paul Jaray
3 - 1917 Kline Kar touring 6-38 - Paul Jaray
4 - 1919 Stork Kar - Amsterdam
(Note: There were a few other "kars" I could have used, but they all would have been reposts.)
(Note 2: Paul J. may have the Stork Kar model designation correct, but I didn't have that info myself so I can't confirm.)