Core Viewpoint - The article discusses the potential hazards associated with the CPC (Composite Pass Card) used at highway toll stations, particularly the risk of the card overheating and potentially exploding when placed near wireless charging devices [1][3]. Group 1: CPC Card Hazards - Users have reported incidents of CPC cards catching fire or exploding due to improper placement near wireless charging areas [1][3]. - The CPC card contains a microchip and metal components that can generate heat through the "eddy current effect" when exposed to electromagnetic fields, similar to how an induction stove operates [5][7]. - The plastic casing of the card has limited heat dissipation capabilities, leading to rapid temperature increases that can cause deformation, bulging, and in severe cases, explosion [7][8]. Group 2: Safety Recommendations - It is advised not to place CPC cards and mobile phones together on wireless charging pads or in strong magnetic field areas to avoid risks of overheating and fire [8]. - After receiving a CPC card, it should be stored in designated areas away from heat sources and wireless chargers to ensure safety [8]. - If a CPC card shows signs of overheating, deformation, or emits a burning smell, it should be returned to the nearest toll station for proper handling [8]. Group 3: General Safety Precautions - Other common items in vehicles, such as electronic devices with lithium batteries, lighters, carbonated drinks, and certain sprays, can also pose explosion or fire risks if not stored properly [8]. - The article emphasizes the importance of vehicle safety checks before travel to mitigate potential hazards [10].

Core Viewpoint - The article highlights the potential dangers associated with the improper placement of the CPC card (Composite Pass Card) in vehicles, particularly when placed near wireless charging pads, which can lead to overheating and even explosions [1][3]. Group 1: CPC Card Risks - The CPC card can overheat, swell, or even explode if placed on or near a car's wireless charging pad due to the electromagnetic field generated during charging [3][5]. - The internal components of the CPC card, such as microchips and antennas, can generate significant heat through the "eddy current effect" when exposed to the electromagnetic field [5][6]. - Proper usage guidelines include keeping the CPC card away from wireless charging areas and ensuring it is stored in designated compartments [5][6]. Group 2: General Safety Hazards in Vehicles - Other items, such as bottled water and glasses, can also pose fire risks when left in vehicles due to the lens effect of sunlight focusing heat [6][8]. - Items like lighters and certain perfumes can explode or ignite under high temperatures, creating significant safety hazards [8][10]. - Electronic devices, particularly those with lithium batteries, are at risk of swelling or exploding in high-temperature environments, especially if they are of poor quality [10][12].