I take your point. The train journey from Valencia to Madrid, city centre to city centre, is ninety minutes. The journey by aircraft, airport to airport, takes 55 minutes, plus 20 minutes at both end from airport to city centre, which, of course, uses more energy. Ninety five minutes. I would also argue that airport infrastructures easily match those of rail. The quoted air fare is 95 Euros - rail 90 Euros but for that price you can take three items of luggage. You pays your money . . . !