Mandy, we definitely can relate to what you are talking about!!!! Your experience with the car dealer is a great example. We've all been there. I don't know why some men just cannot acknowledge that a woman may understand technical stuff. Some of the men know less than we do about such things. Hang in there and stick with us. We do care!!!
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Marilyn 
If anyone would like a free Bible Study CD or book entitled "Searching for Truth", PM me with your mailing address and I'll send you one. "And you shall know the truth and the truth shall set you free." John 8:32