Three Greek international footballers were injured when their taxi crashed on its way to Budapest airport on Monday.
Goals from Marco Reus and Thomas Muller gave Germany victory over Georgia while Portugal beat Serbia to go top of Group I.
Germany beat European champions Spain 1-0 in Tuesday night's friendly thanks to a late goal from Toni Kroos.
Greece have named Kostas Tsanas as their interim coach following the sacking of Claudio Ranieri.
Claudio Ranieri has been sacked as coach of Greece, less than 24 hours after losing to the Faroe Islands.
The Faroe Islands enjoyed their finest night in their international history with a 1-0 win away to Greece.