On the '36-'51 pushrod engine models, the road draft tube is indeed perpendicular to the road, with an angled cut on the end.
From the OP’s description I assumed he has a 120 like mine.
If fumes were a significant problem, one could of course route the tube into the intake through a hose connected to the inside of the air cleaner element, as was indeed how it was done on my '74 XJ12. This was known as positive crankcase ventilation, an early step in air pollution control found on most cars beginning in the 1960s.
My 1950 Mark V has both, a road draft tube, and PCV directly from the rocker cover into the air cleaner.