Conservation is a conservative notion after all.
So what would Jesus drive? My guess is he'd take the bus and hoof it from there. He also rode a donkey, but only on special occasions. Bear in mind that in his day all modes of transportation were bio-degradable, but they did produce greenhouse gases.
"And the nations were enraged, and Your wrath came, and the time came for the dead to be judged, and the time to reward Your bond-servants the prophets and the saints and those who fear Your name, the small and the great, and to destroy those who destroy the earth."For more information check out whatwouldjesusdrive.org.
(Revelation 11:18, NASB, emphasis mine)
For the Adventist take check out this blog post.