Some look horrible. If your offset a little when behind a vehicle equipped with them then you don't see much in the line of brake light when looking on an angle. I've noticed this especially on Chrysler Pacifica's. The brake lights on that car are awful, it lights up to resemble a ring, not a complete lighted circle.
The new bodied 300 is also hard to see the brake lights on.
Cadillac Deville have them too. Tons of light & very bright. As big as the tail lights assemblies are only a 1'2 inch wide strip lights up as the tail light portion. The entire unit lights up for the brake & turnsignal.
Cadillac Escalade has LED tail lights. The lights on this one light up like a series of 9 dots. The turnsignal is above the brake light and is kind of hard to see between the two of them.
I think Chevy uses LED for the third brake light in the center of the trunk lid on Monte Carlos and Impala's.
Many Semi Trailers are equipped with LED lights now.
I prefer the old 1157 bulbs to this modern stuff........
========= Harryface =========
1991 Pontiac Bonneville LE 3800 V6 ( C ), Black/Slate Grey _~_~_~286,095 miles_~_~_
~_~_~_~_U.S.A._~_~_~_~_~_
~~~The Former Fleet ~~~
89 Cavalier Z 24 convertible
78 Holiday 88 coupe
68 LeSabre convertible
73 Impala sedan