A brother slept in his car after driving a brother home after he woke up he the started driving home (his friend couldnt let him sleep at his home) the time for fajir was close and he didnt reach his Home before sunrise he prayed when he arrived because he didnt knew if he can do tayamum is it valid

Ustadh AbdulAziz al-Haqqan

He couldn't buy a bottle of water anywhere, from a gas station or whatever, in the hotel? Or is this just recklessness when it comes to Salah?