mate just got my head round this... you must be shelling out a fortune on insurance and licences 
Not as bad as you maybe thinking..
3 classics Free tax. insurance for them comes to about £500
Winter car is £140 a year tax and iirc £280 Insurance
Dirty car £120 a year tax and about £250 insurance
GTI mk1 been off the road for a few years stored at home (no costs)
GTI mk6 £195 tax iirc £320 to insure.
No ive not added that all up

But if I reduce it to 3 cars it will be cheaper
