German export plates can be very convenient (I think Germany has easy procedures to promote car sales):
* You do NOT need a German address or to be a German national.
* Duration can be chosen in monthly steps up to a year.
* Cost starts at ca. € 150 for one month plates incl. EU-wide insurance.
* EU-wide insurance is sometimes included (e.g. at a plate printer in Munich), but sometimes you need to find the next insurance agent who is usually near the registration offices. Insurance is compulsory for the whole duration and is the most expensive part)
* If you drive through Africa, no one will care if the export plate is still valid, as long as you buy local insurance. If someone cares (never happened to me) the cost will be a "cadeau".
* Export plates can and will usually be a problem at the big borders to Ukraine, Belorussia, Russia. I am told this can be sorted out with a (high) deposit payment - or better with a "donation", but it may be a pain.
* The name on the car papers need NOT match with the driver, but in that case you need a letter of authorization, which you can write yourself and needs no official stamp.
* The number of countries worldwide that really require a carnet can be counted on one hand.
Don't ask the automobile clubs for info, as they make money with carnets and authorization stamps.