Good old fashioned Coke works on road tar. You might try it.
On Tuesday, August 5, 2003, at 04:00 PM, Automatic digest processor
wrote:

>
> In a message dated 8/1/03 4:44:57 PM Eastern Daylight Time,
> gmr@OBPA.USDA.GOV
> writes:
>
>
>> This is a bit embarrassing but when in Newfoundland last month I
>> inadvertently ran over a wet yellow road stripe that had just been
>> painted.
>> Now I have a bright yellow stripe under the left side of my van and
>> some of
>> the paint actually got on the body.  I was wondering if anyone has
>> experience removing this from the painted surface of the van.  I don't
>> really care about underneath as I can just spray on some black
>> undercoating
>> to cover it up.
>>
>>
>
> paint thinner/mineral spirits