A little ReadMe with credits for the original author would make it
for release, but he is not the only one, fcm (Felipe Cremedes) uploaded
files at racesimulations that look modified too.
It is a general problem, also in GP4 and other games, that people use
other ones work and tell it is their own, most it is very easy to ask
the original author for permission by mail or pm.
Happy racing from Germany !!