My husband and I are in our early 60's. We want to travel to Ireland, Scotland, Wales, and England in late August this year. We have wavered between going on an escorted tour bus or renting a car. We are leaning toward driving right now and have questions: 1) Can cars be rented in one country and be driven or ferried to the other three countries? 2) What is the approximate cost of a car rental for one or two weeks (small to mid-size automatic with air) and what is the best rental company? 3) What is the price of gasoline now in those countries? 4) Any other advice for seeing these countries by car? Thanks.