I believe that the ES on the Lexus's (Lexi) 300 series stands for Economy Sedan. I had a Mazda RX7 GSL that stood for Grand Sport Limited. Mazda had a great sense of nomenclature in that the base RX7 was the "S" (sport), next was the "GS" (Grand Sport), next the "GSL" and finally they added the "GSLE" (Grand Sport Limited Edition). Each model was progressively more heavily equipped and more expensive. Of course the i and e on Mercedes stand for injection or gasoline (essen). GTO was Grand Turismo Omligatto (sp?). Z28 is the designation for the option package that GM uses on the door stickers as is Z71 for the 4 x 4 trucks, Z24, etc. The 240Z was named that for the American market with the 240 being the displacement divided by ten and the Z meaning absolutely nothing. In Japan it was the Fair Lady Z, but that wouldn't have sold to us macho americanos. Datsun's 510 was, I believe, the Cherry Blossom in Japan.
I couldn't repair your brakes, so I made your horn louder.