Ah, EJ Thribb, threnodist extraordinaire. Here's my effort, a mere parodic shadow of the great obituarist's works:
So, farewell then
Morgan four seater.
Four wheels, four
Cylinders, four seats.
That was your thing.
You had a voluminous rear
And a fruity exhaust
(like Keith's mum).
But leaked a bit
(also like Keith's mum).
E.J. Thribb (17½)

Much better !!