IMO Derek's extremely restricted experience working there (normal) is at odds with the relative freedom that tourists get, as long as they have an escort.
Is there any other way of getting from Spain to Algeria?
The ferry you mention is the way. Morocco border is long time closed but it looks like Sy knows this (makes a change!)
But our big question is: Is it safe? The US State Department and the
UK Foreign Office don't think so, and urge tourists not to drive
across Algeria. We've driven across and through Turkey, Jordan, Syria
and Egypt , as well as all through Russia and Ukraine, without a hint
of trouble. Is Algeria dangerous for tourists on the open roads, going mainly from west to east near the coast?
Algeria is not comparable with those safe places IMO but after many years of inaction it appears the state has decided to act in the Kabylie (north east) where many of the attacks Derek mentions (as well as local kidnapping/extortion) have occured. Daily, AQIM/GSPC types are surrendering or being killed. Plenty of stories
like this at the moment. It could all be coming to a head (which is a good thing).
Avoid the Kabylie. From Oran I would drive the Citroen south into the desert - Ain Sefra, Bechar, Taghit, Timimoun, across to El Menia (El Golea) up to Ghardaia and then Touggourt, El Oued and into Tunisia at Nefta. Hot, but a brilliant road tour and one that avoids the real danger zone. You will need a tourist agency escort (50-100 eu a day) as well as possibly joining the occasional OTT gendarmerie convoys who want you out of their jurisdiction - but it will all be worth it for peace of mind.
Are cars required to attach Algerian plates rather than their own?
No, but in Kabylie you might feel more comfortable if they were - especially with US plates. Might be better to make up a set of plates on a Spanish or any European pattern if possible, without the 'garden state' bit. As long as the number match, who cares.
In my experience the Algerian people are great - even the men in hats - and will admire and appreciate an American for visiting their country. I am sure you know how to comport yourself from your previous travels in similar countries.
What are the rules for driving in Libya with your own vehicle?
A long story - ask again on HUBB Sahara forum - this post ought to be moved there - or
see this -
Chris S