By car, bus, plane.
It obvious depends on... your starting point in Scotland, your destination in Wales, the mode of transport you take, the route you take and the speed that you travel at.
They mostly offer their services to Ireland, Northern Ireland, England, Scotland and Wales. There are other national car insurance companies you could look into if you are not in that region.
The most common crossing point From Dublin to Wales is the ferry to Holyhead in Wales. The distance is about 67 miles and can be done in under two hours. By air, flying to Cardiff, takes less than an hour.
From where?
He was born in South Wales so it must have been a Welsh car. It was actually named after the longest station name in Wales.
IMO, Avatar Vehicles is the best option. They offer Car Leasing, buying in Scotland.
As they are on separate islands, to get from Scotland to Ireland by car, requires going on a ferry. The quickest ferry takes about 2 hours. Where in Scotland you are originally coming from and where in Ireland you are going to, will determine the rest of the driving time.
You can get a liscense at 17.
Air, boat or car.
Will depend on the hire car, the company and how long you hire the car for (if you hire the car for longer the cost per day will be cheaper). From £20-25 per day for a small car. Link is from Dorset but will be appropriate for Scotland.
You can rent a car in North Wales from various car rental companies located in cities like Wrexham, Bangor, and Llandudno. It is recommended to check online for specific rental locations and availability.