Hello and welcome to the forum Hilary.
I'm based in Northampton but really love to trike around Scotland
You'll find the extra width of a trike forces cars more to the right.
That means there's less space for cars to squeeze through so you tend to get better overtakes.
Being overtaken by fast HGv's isn't so bad because you're low and on three wheels. So you cannot wobble and most of the air blast is going right over your head. So you may speed up a little but you're not dragged sideways .....

Even punishment overtakes by cars aren't so bad because they'll hit the trike before you and they'll not do that because they'll damage their car ......
Luck .......