New 20 ounce tumblers available now! Forum donation credit with purchase. https://www.wildguzzi.com/Products/products.htm#Tumbler
Not that I know of. Look up SMIDSY videos (Sorry Mister I Didn't See You). I do the same when approaching a dicey looking intersection/area.At the very least, it makes other drivers think you are 1) incompetent 2) showing off 3) crazy 4) drunk. Any one of which makes them notice you and stay away (maybe :) ).