I find my albums are inundated with planes. I don't have any commemorating the Wright brothers but I can cover the first non-stop Atlantic flight:
This first day cover for the Postal Union has planes, a ship and a PO van:
I like this next stamp in particular for its clarity and colour:
But my favourite plane has to be the supersonic Concorde, alas now defunct:
The plane may be British, but the colourful stamp is from Malawi:
I spent a number of years working in Norway and that accounts for my final plane(s):
For trains I have to start with Stephenson's Locomotion:
The meeting that established the world's first railway was held in my local town. Yarm Town Hall boasts this plaque:
Trains would not be complete for me without the Flying Scotsman (shame about the postmark):
From abroad there are trains from Mexico and New Zealand:
I was very disappointed when I looked for automobiles and only came up with this First Class stamp:
I had to resort to stamps combining the theme from USA:
And from Romania:
There's not even a car on here.
If I haven't put you off there are more on view at: Viridian's Sunday Stamps 18.