A panel for a vehicle comprising: a substrate ; and a hardcoat layer on a surface of the substrate configured as a vehicle front-facing surface; wherein the panel comprises a first portion having a visible light transmission equal to or greater than 40%, or equal to or greater than 60%, preferably equal to or greater than 75%, more preferably equal to or greater than 88%, measured in accordance with ASTM D1003-00; and wherein the substrate comprises a polymer composition comprising polycarbonate and having a melt volume rate, wherein if the polymer composition comprises more than one polycarbonate, the melt volume rate is a melt volume rate of a blend of all of the polycarbonates, and if the polymer composition comprises one polycarbonate, the melt volume rate is a melt volume rate of the one polycarbonate; wherein the melt volume rate is equal to or less than 15 cm 3 /10 min, measured at 300°C with a 1.2 kg load in accordance with ISO1133; wherein the polymer composition comprises an acid stabilizer comprising sulfonic acid or an ester thereof, preferably n-butyl tosylate, wherein a width of the panel is equal to or greater than 450 mm; wherein a height of the panel is equal to or greater than 300 mm; and wherein a thickness of the panel is equal to or less than 5 mm, preferably 0.5 mm to 5 mm, or 1 mm to 4.5 mm, or 1.5 mm to 4 mm, wherein the panel further comprises a second portion , wherein a visible light transmission of the second portion is less than 40%, or equal to or less than 10%, preferably equal to or less than 1%, more preferably equal to or less than 0.1%, measured in accordance with ASTM D1003-00. a substrate ; and a hardcoat layer on a surface of the substrate configured as a vehicle front-facing surface; wherein the panel comprises a first portion having a visible light transmission equal to or greater than 40%, or equal to or greater than 60%, preferably equal to or greater than 75%, more preferably equal to or greater than 88%, measured in accordance with ASTM D1003-00; and wherein the substrate comprises a polymer composition comprising polycarbonate and having a melt volume rate, wherein if the polymer composition comprises more than one polycarbonate, the melt volume rate is a melt volume rate of a blend of all of the polycarbonates, and if the polymer composition comprises one polycarbonate, the melt volume rate is a melt volume rate of the one polycarbonate; if the polymer composition comprises more than one polycarbonate, the melt volume rate is a melt volume rate of a blend of all of the polycarbonates, and if the polymer composition comprises one polycarbonate, the melt volume rate is a melt volume rate of the one polycarbonate; wherein the melt volume rate is equal to or less than 15 cm 3 /10 min, measured at 300°C with a 1.2 kg load in accordance with ISO1133; wherein the polymer composition comprises an acid stabilizer comprising sulfonic acid or an ester thereof, preferably n-butyl tosylate, wherein a width of the panel is equal to or greater than 450 mm; wherein a height of the panel is equal to or greater than 300 mm; and wherein a thickness of the panel is equal to or less than 5 mm, preferably 0.5 mm to 5 mm, or 1 mm to 4.5 mm, or 1.5 mm to 4 mm, wherein the panel further comprises a second portion , wherein a visible light transmission of the second portion is less than 40%, or equal to or less than 10%, preferably equal to or less than 1%, more preferably equal to or less than 0.1%, measured in accordance with ASTM D1003-00. <EOS>