Despite the highly taxation of fuel all over Europe, we have far too many trucks on our highways.
And if you look at the material flows, everybody with a little common sense will shake ones head.
Example: Milk is produced by ranchers in northern Germany, then it gets transported over the alps, roundabout 1000 miles (1600 km) or more to central or southern Italy to be processed to yoghurt, curd or cream and filled into plastic cups, which are produced at other places in Germany or other countries of the EU as well, also transported by truck.
Then all these products are carried over the alps all the way back to Germany partly labled as italian delicacy or as german milk product.
Now lets look at the figures.
A 40t truck loads roundabout 26 to 30 tons gross. Let the packaging and handling means (pallettes) count for 5% or 1.5 to of the load there remain for easier calculation 26t of the product.
The truck consumes roundabout 35 to 40 l / 100 km (~ 10 mpg) equals 650 l (170 Gallons) for the 1000 miles. 650 l * 1.20 €/l gives 780 € fuel cost.
A cup of cream of 125g is sold in the store for 0.80 € to 1.20 € so the price per kg is 7€ to 9€ per kg. 780€ / 25000 kg gives 0.03 € per kg merchandise. from these three cent, two cent are tax.
BTW the rancher gets 0.25€ to 0.35 € / l of raw milk and the retailer calculates a gross margin of 5% to 8%.
So even with tripling the fuel taxation, the cost of road transportation is a neglectible amount.
This is just an example of the complete madness in modern markets because of far too little taxation of the transportation.
Just my two cents